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537 lines
17 KiB
PHP
537 lines
17 KiB
PHP
<?php
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namespace Psalm\Tests;
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class TemplateTest extends TestCase
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{
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use Traits\FileCheckerInvalidCodeParseTestTrait;
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use Traits\FileCheckerValidCodeParseTestTrait;
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/**
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* @return array
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*/
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public function providerFileCheckerValidCodeParse()
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{
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return [
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'classTemplate' => [
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'<?php
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class A {}
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class B {}
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class C {}
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class D {}
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/**
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* @template T as object
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*/
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class Foo {
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/** @var string */
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public $T;
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/**
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* @param string $T
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* @template-typeof T $T
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*/
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public function __construct(string $T) {
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$this->T = $T;
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}
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/**
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* @return T
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*/
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public function bar() {
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$t = $this->T;
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return new $t();
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}
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}
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$at = "A";
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/** @var Foo<A> */
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$afoo = new Foo($at);
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$afoo_bar = $afoo->bar();
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$bfoo = new Foo(B::class);
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$bfoo_bar = $bfoo->bar();
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// this shouldn’t cause a problem as it’s a docbblock type
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if (!($bfoo_bar instanceof B)) {}
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$cfoo = new Foo("C");
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$cfoo_bar = $cfoo->bar();
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$dt = "D";
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$dfoo = new Foo($dt);',
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'assertions' => [
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'$afoo' => 'Foo<A>',
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'$afoo_bar' => 'A',
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'$bfoo' => 'Foo<B>',
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'$bfoo_bar' => 'B',
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'$cfoo' => 'Foo<C>',
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'$cfoo_bar' => 'C',
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'$dfoo' => 'Foo<mixed>',
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],
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'error_levels' => [
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'MixedReturnStatement',
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'LessSpecificReturnStatement',
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'RedundantConditionGivenDocblockType',
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],
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],
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'classTemplateSelfs' => [
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'<?php
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/**
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* @template T as object
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*/
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class Foo {
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/** @var string */
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public $T;
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/**
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* @param string $T
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* @template-typeof T $T
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*/
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public function __construct(string $T) {
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$this->T = $T;
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}
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/**
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* @return T
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*/
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public function bar() {
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$t = $this->T;
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return new $t();
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}
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}
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class E {
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/**
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* @return Foo<self>
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*/
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public static function getFoo() {
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return new Foo(__CLASS__);
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}
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/**
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* @return Foo<self>
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*/
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public static function getFoo2() {
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return new Foo(self::class);
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}
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/**
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* @return Foo<static>
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*/
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public static function getFoo3() {
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return new Foo(static::class);
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}
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}
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class G extends E {}
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$efoo = E::getFoo();
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$efoo2 = E::getFoo2();
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$efoo3 = E::getFoo3();
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$gfoo = G::getFoo();
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$gfoo2 = G::getFoo2();
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$gfoo3 = G::getFoo3();',
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'assertions' => [
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'$efoo' => 'Foo<E>',
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'$efoo2' => 'Foo<E>',
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'$efoo3' => 'Foo<E>',
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'$gfoo' => 'Foo<E>',
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'$gfoo2' => 'Foo<E>',
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'$gfoo3' => 'Foo<G>',
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],
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'error_levels' => [
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'MixedReturnStatement',
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'LessSpecificReturnStatement',
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'RedundantConditionGivenDocblockType',
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],
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],
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'classTemplateExternalClasses' => [
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'<?php
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/**
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* @template T as object
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*/
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class Foo {
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/** @var string */
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public $T;
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/**
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* @param string $T
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* @template-typeof T $T
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*/
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public function __construct(string $T) {
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$this->T = $T;
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}
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/**
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* @return T
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*/
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public function bar() {
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$t = $this->T;
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return new $t();
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}
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}
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$efoo = new Foo(Exception::class)
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$efoo_bar = $efoo->bar();
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$ffoo = new Foo("LogicException");
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$ffoo_bar = $ffoo->bar();',
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'assertions' => [
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'$efoo' => 'Foo<Exception>',
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'$efoo_bar' => 'Exception',
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'$ffoo' => 'Foo<LogicException>',
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'$ffoo_bar' => 'LogicException',
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],
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'error_levels' => ['MixedReturnStatement', 'LessSpecificReturnStatement'],
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],
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'classTemplateContainer' => [
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'<?php
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class A {}
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/**
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* @template T
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*/
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class Foo {
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/** @var T */
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public $obj;
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/**
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* @param T $obj
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*/
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public function __construct($obj) {
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$this->obj = $obj;
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}
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/**
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* @return T
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*/
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public function bar() {
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return $this->obj;
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}
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public function __toString(): string {
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return "hello " . $this->obj;
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}
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}
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$afoo = new Foo(new A());
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$afoo_bar = $afoo->bar();',
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'assertions' => [
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'$afoo' => 'Foo<A>',
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'$afoo_bar' => 'A',
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],
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'error_levels' => ['MixedOperand', 'MixedReturnStatement'],
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],
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'phanTuple' => [
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'<?php
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namespace Phan\Library;
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/**
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* An abstract tuple.
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*/
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abstract class Tuple
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{
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const ARITY = 0;
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/**
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* @return int
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* The arity of this tuple
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*/
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public function arity(): int
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{
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return (int)static::ARITY;
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}
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/**
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* @return array
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* An array of all elements in this tuple.
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*/
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abstract public function toArray(): array;
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}
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/**
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* A tuple of 1 element.
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*
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* @template T0
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* The type of element zero
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*/
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class Tuple1 extends Tuple
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{
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/** @var int */
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const ARITY = 1;
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/** @var T0 */
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public $_0;
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/**
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* @param T0 $_0
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* The 0th element
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*/
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public function __construct($_0) {
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$this->_0 = $_0;
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}
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/**
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* @return int
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* The arity of this tuple
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*/
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public function arity(): int
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{
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return (int)static::ARITY;
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}
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/**
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* @return array
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* An array of all elements in this tuple.
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*/
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public function toArray(): array
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{
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return [
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$this->_0,
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];
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}
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}
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/**
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* A tuple of 2 elements.
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*
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* @template T0
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* The type of element zero
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*
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* @template T1
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* The type of element one
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*
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* @inherits Tuple1<T0>
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*/
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class Tuple2 extends Tuple1
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{
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/** @var int */
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const ARITY = 2;
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/** @var T1 */
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public $_1;
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/**
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* @param T0 $_0
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* The 0th element
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*
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* @param T1 $_1
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* The 1st element
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*/
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public function __construct($_0, $_1) {
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parent::__construct($_0);
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$this->_1 = $_1;
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}
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/**
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* @return array
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* An array of all elements in this tuple.
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*/
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public function toArray(): array
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{
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return [
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$this->_0,
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$this->_1,
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];
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}
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}
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$a = new Tuple2("cool", 5);
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/** @return void */
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function takes_int(int $i) {}
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/** @return void */
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function takes_string(string $s) {}
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takes_string($a->_0);
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takes_int($a->_1);',
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],
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'validTemplatedType' => [
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'<?php
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namespace FooFoo;
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/**
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* @template T
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* @param T $x
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* @return T
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*/
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function foo($x) {
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return $x;
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}
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function bar(string $a): void { }
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bar(foo("string"));',
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],
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'validTemplatedStaticMethodType' => [
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'<?php
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namespace FooFoo;
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class A {
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/**
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* @template T
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* @param T $x
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* @return T
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*/
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public static function foo($x) {
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return $x;
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}
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}
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function bar(string $a): void { }
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bar(A::foo("string"));',
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],
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'validTemplatedInstanceMethodType' => [
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'<?php
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namespace FooFoo;
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class A {
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/**
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* @template T
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* @param T $x
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* @return T
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*/
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public function foo($x) {
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return $x;
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}
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}
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function bar(string $a): void { }
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bar((new A())->foo("string"));',
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],
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'genericArrayKeys' => [
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'<?php
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/**
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* @template T
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*
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* @param array<T, mixed> $arr
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* @return array<int, T>
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*/
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function my_array_keys($arr) {
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return array_keys($arr);
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}
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$a = my_array_keys(["hello" => 5, "goodbye" => new \Exception()]);',
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'assertions' => [
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'$a' => 'array<int, string>',
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],
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],
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'genericArrayFlip' => [
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'<?php
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/**
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* @template TKey
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* @template TValue
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*
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* @param array<TKey, TValue> $arr
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* @return array<TValue, TKey>
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*/
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function my_array_flip($arr) {
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return array_flip($arr);
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}
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$b = my_array_flip(["hello" => 5, "goodbye" => 6]);',
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'assertions' => [
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'$b' => 'array<int, string>',
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],
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],
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'genericArrayPop' => [
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'<?php
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/**
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* @template TValue
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*
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* @param array<mixed, TValue> $arr
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* @return TValue|null
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*/
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function my_array_pop(array &$arr) {
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return array_pop($arr);
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}
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/** @var mixed */
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$b = ["a" => 5, "c" => 6];
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$a = my_array_pop($b);',
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'assertions' => [
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'$a' => 'mixed',
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'$b' => 'array<mixed, mixed>',
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],
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'error_levels' => ['MixedAssignment', 'MixedArgument'],
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],
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];
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}
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/**
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* @return array
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*/
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public function providerFileCheckerInvalidCodeParse()
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{
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return [
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'invalidTemplatedType' => [
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'<?php
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namespace FooFoo;
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/**
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* @template T
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* @param T $x
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* @return T
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*/
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function foo($x) {
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return $x;
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}
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function bar(string $a): void { }
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bar(foo(4));',
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'error_message' => 'InvalidScalarArgument',
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],
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'invalidTemplatedStaticMethodType' => [
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'<?php
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namespace FooFoo;
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class A {
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/**
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* @template T
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* @param T $x
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* @return T
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*/
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public static function foo($x) {
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return $x;
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}
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}
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function bar(string $a): void { }
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bar(A::foo(4));',
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'error_message' => 'InvalidScalarArgument',
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],
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'invalidTemplatedInstanceMethodType' => [
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'<?php
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namespace FooFoo;
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class A {
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/**
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* @template T
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* @param T $x
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* @return T
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*/
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public function foo($x) {
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return $x;
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}
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}
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function bar(string $a): void { }
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bar((new A())->foo(4));',
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'error_message' => 'InvalidScalarArgument',
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],
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];
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}
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}
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